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12. Devices for delaying the operation and release of relays. GUNDY RF J Exp Anal Behav; 1959 Jul; 2():184. PubMed ID: 13830290 [No Abstract] [Full Text] [Related]
13. The decade-counter tube in the psychological laboratory. ENTICKNAP LE Am J Psychol; 1960 Mar; 73():138-9. PubMed ID: 13820449 [No Abstract] [Full Text] [Related]